Unity3D 本地数据持久化记录存储

下面介绍几种 Unity本地记录存储的实现方式。

第一种 Unity自身提供的 PlayerPrefs

//保存数据

PlayerPrefs.SetString("Name",mName);
PlayerPrefs.SetInt("Age",mAge);
PlayerPrefs.SetFloat("Grade",mGrade)

//读取数据

mName=PlayerPrefs.GetString("Name","DefaultValue");
mAge=PlayerPrefs.GetInt("Age",0);
mGrade=PlayerPrefs.GetFloat("Grade",0F);

//清除所有记录

 PlayerPrefs.DeleteAll();

//删除其中某一条记录

PlayerPrefs.DeleteKey("Age");

//将记录写入磁盘

PlayerPrefs.Save()

第二种 BinaryFormatter 二进制序列化

假设有一个Player类

[System. Serializable]
public class Player
{
      public int health;
      public int  power;
      public Vector3 position;
}

由于BinaryFormatter序列化不支持Unity的Vector3类型，所以我们需要做一下包装。

public class PlayerData{
	
	public int level;
	public int health;
	public float[] position;

	public PlayerData(Player player)
	{
		this.level = player.level;
		this.health = player.health;
		this.position = new float[3];
		this.position[0] = player.transform.position.x;
		this.position[1] = player.transform.position.y;
		this.position[2] = player.transform.position.z;
	}
}

我们对PlayerData进行保存和读取。读取出来的PlayerData可以赋给Player。

public static class SaveSystem{
       //保存数据
	public static void SavePlayer(Player player)
	{
		BinaryFormatter formatter = new BinaryFormatter();
		string path = Application.persistentDataPath+"/player.fun";
		FileStream stream = new FileStream(path,FileMode.Create);
		PlayerData data = new PlayerData(player);
		formatter.Serialize(stream,data);
		stream.Close();
	}

     //读取数据
	public static PlayerData LoadPlayer()
	{
		string path = Application.persistentDataPath+"/player.fun";
		if(File.Exists(path))
		{
			BinaryFormatter formatter = new BinaryFormatter();
			FileStream stream = new FileStream(path,FileMode.Open);
			PlayerData data = formatter.Deserialize(stream) as PlayerData;
			stream.Close();
			return data;
		}else{
			Debug.LogError("Save file not found in  "+path);
			return null;
		}
	}
}

第三种 保存为json格式的文本文件

使用 Unity 自身API JsonUtility。

保存数据

	public static void SavePlayerJson(Player player)
	{
		string path = Application.persistentDataPath+"/player.json";
		var content = JsonUtility.ToJson(player,true);
		File.WriteAllText(path,content);
	}

读取数据

	public static PlayerData LoadPlayerJson()
	{
		string path = Application.persistentDataPath+"/player.json";
		if(File.Exists(path)){
			var content = File.ReadAllText(path);
			var playerData = JsonUtility.FromJson(content);
			return playerData;
		}else{
			Debug.LogError("Save file not found in  "+path);
			return null;
		}
	}

第四种 XmlSerializer进行串行化

假如有类

public class Entity
{
    public Entity()
    {
    }
    public Entity(string c, string f)
    {
      name = c;
      school = f;
    }
    public string name;
    public string school;
}

读取数据

List entityList=null;
XmlSerializer xs = new XmlSerializer(typeof(List));
using (StreamReader sr = new StreamReader(configPath))
{
   entityList = xs.Deserialize(sr) as List;
}

保存数据

List entityList=null;
XmlSerializer xs = new XmlSerializer(typeof(List));
using (StreamWriter sw = File.CreateText(configPath))
{
  xs.Serialize(sw, entityList);
}

对应的xml文件为：

 
  Alice
  SJTU
 
 
  Cici
  CSU
 
 
  Zero
  HIT